54156565 has 16 divisors (see below), whose sum is σ = 66787776. Its totient is φ = 42134400.

The previous prime is 54156563. The next prime is 54156581. The reversal of 54156565 is 56565145.

It is not a de Polignac number, because 54156565 - 2¹ = 54156563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54156563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70785 + ... + 71545.

It is an arithmetic number, because the mean of its divisors is an integer number (4174236).

Almost surely, 2^54156565 is an apocalyptic number.

It is an amenable number.

54156565 is a deficient number, since it is larger than the sum of its proper divisors (12631211).

54156565 is a wasteful number, since it uses less digits than its factorization.

54156565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

The product of its digits is 90000, while the sum is 37.

The square root of 54156565 is about 7359.1144168303. The cubic root of 54156565 is about 378.3412579389.

The spelling of 54156565 in words is "fifty-four million, one hundred fifty-six thousand, five hundred sixty-five".